@scaredtodie94,
Yes, it could be connected. But being sixteen (or any age along in there) is when we first begin to really understand viscerally that all of us do die, if we haven't before. After that we vary on what that means, relative to religious belief and questioning of it. We start to get a whole wider view of life as we see it.
Of course you are going to be ok. Calm down. If you get panicked, breathe deep in a restful way.